A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6320-01-606-2508
NSN 6135-00-816-9052
NSN 6685-01-023-8007
NSN 6105-00-153-7967
NSN 6145-01-106-1252
NSN 5920-01-568-8995
NSN 6685-01-337-1952
NSN 5925-01-326-7226
NSN 5985-00-175-4854
NSN 5998-01-488-6060
NSN 5920-00-577-2657
NSN 6105-01-634-0322